Written by Terry Nation
Designed by Robert Jones
Directed by Don Chaffey

A millionaire fakes his own death, and bequeaths an ancient Chinese dagger to Steed, in an attempt to foil his enemies.

An enjoyable Maltese Falcon parody featuring an odd assortment of characters. A great portion of the story takes place at Steed's apartment.

While Gorky is on the floor dying, he downs another glass of champagne and lets the glass drop to the floor, over his shoulder. The glass is heard to break, but when the shot changes, there is no sign of broken glass anywhere.

When Baron Von Orlak is interrogating Tara, he addresses her as "Fraulein King", (being German), until the final time when reverts to "Miss King".